Fabrication and optical properties of 3D composite photonic crystals of core-shell structures |
| |
Authors: | Yanping Liu |
| |
Institution: | Department of Physics, Lanzhou University, Lanzhou 730000, PR China |
| |
Abstract: | Three-dimensional (3D) composite colloidal photonic crystals with SiO2 core and ZnO shell were fabricated on borosilicate glass (BSG) substrate by a two-stage deposition method. Scanning electron microscopy (SEM) measurements show that both the pre-deposited SiO2 and SiO2/ZnO core-shell structures are oriented with their (1 1 1) axes parallel to the substrates. Optical measurement reveals that the periodic arrays exhibit a photonic band gap in the (1 1 1) direction. The optical properties of SiO2/ZnO core-shell structures strongly depend on the size dispersions of colloidal spheres and the intrinsic defects in the sample. |
| |
Keywords: | Two-stage deposition Core-shell structures Photonic band gap |
本文献已被 ScienceDirect 等数据库收录! |